lucene/queries/src/java/org/apache/lucene/queries/intervals/DisiWrapper.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.lucene.queries.intervals;

import org.apache.lucene.search.DocIdSetIterator;

class DisiWrapper {

  public final DocIdSetIterator iterator;
  public final IntervalIterator intervals;
  public final long cost;
  public final float matchCost; // the match cost for two-phase iterators, 0 otherwise
  public int doc; // the current doc, used for comparison
  public DisiWrapper next; // reference to a next element, see #topList

  // An approximation of the iterator, or the iterator itself if it does not
  // support two-phase iteration
  public final DocIdSetIterator approximation;

  public DisiWrapper(IntervalIterator iterator) {
    this.intervals = iterator;
    this.iterator = iterator;
    this.cost = iterator.cost();
    this.doc = -1;
    this.approximation = iterator;
    this.matchCost = iterator.matchCost();
  }

}